Features. Cofair Products Quick Roof Extreme White for RVS with Steel-Loc Adhesive, Instant Self-Adhesive Roof Repair. Can be applied to most materials when damp or even wet. Quick Roof Extreme is guaranteed not to crack, harden, or shrink. It instantly stops leaks and permanently repairs: all RV roof materials, vents, skylights, slide-outs, windows, awnings, holding tanks, tents and more Repairs: EPDM, TPO, metal, fiberglass, aged & rigid PVC, vinyl, wood, OSB and most building materials. Quick Roof Extreme White. Size - 4 in. x 6 Ft.